Combined weatherstrip and sash balance



June 5, 1962 w. T. DE BRUYN 3,037,250

COMBINED WEATHERSTRIP AND SASH BALANCE Filed Sept. 14, 1959 2 Sheets-Sheet 1 7" J WMM ATTORNEY,

June 5, 1962 w. T. DE BRUYN 3,037,250

COMBINED WEATHERSTRIP AND SASH BALANCE Filed Sept. 14, 1959 2 Sheets-Sheet 2 z 4 Z0 4 7 w K; W. 23 /5 c y .5 5 3 16 IN V EN TOR.

ATTORNEY.

United States Patent Office 3,037,250 Patented June 5, 1962 3,037,250 COMBINED WEATHERSTRIP AND SASH BALANCE William T. De Bruyn, Grand Rapids, Micin, assignor to Grand Rapids Hardware Company, Grand Rapids, Mich, a corporation of Michigan Filed Sept. 14, 1959, Ser. No. 839,687 4 Claims. (Q1. 2052.4)

This invention relates to a combined weather strip and sash balance for slidable sash types of windows, and one particularly desirable for windows including upper and lower sash. The principal objects of this invention are:

First, to provide a combined weather strip and counter balance unit including sash stop means limiting the opening movements of both sash.

Second, to provide a combined weather strip and counter balance unit having these advantages in which the stop means is inconspicuous both with the windows closed and with the windows open.

Third, to provide a combined weather strip and sash balance having these advantages which may be produced economically and installed as a unit.

Further objects relating to details and economies of the invention will appear from the description to follow. The invention is defined and pointed out in the claims.

A preferred embodiment of the invention is illustrated in the accompanying drawings, in which:

FIG. 1 is a perspective view including a window frame, upper and lower sash, and the combined weather strip and sash balance unit of my invention, parts being broken away to show the relation of several parts, and certain parts being shown conventionally.

FIG. 2 is a fragmentary view in vertical section on a line corresponding to the broken line 2-2 of FIG. 3.

FIG. 3 is an end side elevational view of a combined weather strip and sash balance embodying my invention.

FIG. 4 is an enlarged fragmentary vertical section on a line corresponding to line 4-4 in FIGS. 3 and 5, illustrating structural details including the stop for lower sash.

FIG. 5 is a horizontal section on a line corresponding to line 5-5 of FIG. 3.

FIG. 6 is an enlarged fragmentary View of the stop for the lower sash illustrated in FIGS. 3, 4, and 5.

FIG. 7 is a plan view of the blank from which the stop for the upper sash illustrated in FIGS. 4, 5, and 6 is formed.

FIG. 8 is a fragmentary view partially in vertical section illustrating details of the stop for the top sash.

FIG. 9 is a fragmentary view in section on a line corresponding to line 9-9 of FIG. 8.

In the accompanying drawings 1 represents the jamb or side member of a window frame; 2 the top; and 3 the sill thereof. These are conventionally shown, and the joints or connections for the parts are not illustrated. 4 represents the lower sash, and 5 the upper sash of the window. 6 represents the lock for the sash. This is conventionally shown, but it will be understood that commonly these sash locks or catches include a pivotal member and coacting keeper, and one of the objects of my invention is to provide a combined weather strip and counter balance in which the parting stop or cross piece between the upper and lower sash is not marred or disfigured as a result of manipulating the sash in relation to each other.

The weather strip designated generally by the numeral 7 is formed by a strip of sheet metal conformed to provide a central parting strip 8 and forwardly projecting flanges 9 which coact with the parting strip to form forwardly facing sash channels 10. The edges of these flanges are folded inwardly at 11. The counter balance housings 12 are provided with laterally projecting flanges 13 which supportedly engage in slots 14 formed in the web portion of the weather strip to receive these tongues. As this feature forms no part of my present invention, it is not further described.

A counter balance spring 15 is provided for each sash, these in the embodiment illustrated are provided with sash engaging hangers 29 which engage the lower edges of each sash.

The opening movement of the lower sash, which may be a combined force of the counter balance spring and the upward thrust of the operator, is checked by the stop designated generally by the numeral 16 at the upper end of the way in the weather strip for the lower sash, and a stop designated generally by the numeral 17 limits the downward movement of the upper sash.

The counter balance springs and the sash-engaging hangers thereof are not illustrated in detail, as such details form no part of the present invention.

The upper sash stop 16 is formed of sheet metal and comprises a central body portion designated in FIG. 7 by the numeral 18, and inwardly turned flanges 19 and 20 and end flanges 21 and 22, these being folded to the position illustrated in FIGS. 4, 5, and 6. The stop is dimensioned to fit between the adjacent spring hanger 12 and the flange 9. The upper end flange 22 has a downturned hook-like extension 23 which is engaged over the upper end of the adjacent wall of the adjacent counter balancing housing. The stop 16 is also provided with a laterally projecting tongue 24 formed by striking out a portion of the flange 20 (see FIGS. 4, 6, and 7) which is engaged with the inner edge of the inturned weather strip flange. This effectively secures the stop 16 Without the aid of screws or like fasteners. It will be understood that when in installed position its upper end abuts the top casing member.

The stop for the upper sash, designated generally by the numeral 17, is of inwardly facing channel section and disposed at the bottom of the upper sash way of the weather strip. This stop member 17 is provided with an out-turned flange 26 which engages an inwardly offset portion 27 of the outer flange 9 of the weather strip and is further secured by means of the brad or fastener 28. One purpose of this brad or fastener 28 is to secure the stop member 17 in its vertically adjusted position as is illustrated by dotted lines in FIG. 8. However, in most conditions this stop 17 is adjusted so that it is supported by the sill 3, as is shown in FIGS. 5, 2, and 8.

With this arrangement of parts the combination weather strip and counter balance with its stops constitutes an assembled unit, and is merchandised and installed as such. When installed the stops are inconspicuous but at the same time are not displaced in use.

I have illustrated and described my invention in a practical commercial embodiment thereof. I have not attempted to illustrate or describe certain structural variations and adaptations for particular weather strips and counter balances, as it is believed that this disclosure will enable those skilled in the art to embody or adapt my invention as may be desired.

Having thus described the invention what is claimed as new and desired to secure by Letters Patent is:

1. A combined Weatherstrip and sash balance for windows including a lower and an upper sash comprising a combined Weatherstrip and sash slide member having a central sash parting strip and a forwardly facing channellike bottom. and top sash slideways, said member having forwardly projecting edge flanges constituting the outer walls of the sash slideways, said flanges being folded inwardly, sash counterbalances including coil springs provided with sash engaging means at their lower ends and combined spring housing and Weatherstrip members of inwardly facing channel section provided with laterally projecting flanges disposed in supported engagement with the web portions of the sash slideways, a bottom sash stop disposed at the top of said bottom sash slideway between the spring housing therein and the adjacent flange and having a downwardly projecting hook on the upper end thereof supportedly engaged with the upper end of the adjacent spring housing, said stop having a tongue projecting therefrom retainingly engaging the aforesaid infolded edge of the flange, and an upper sash stop of rearwardly facing channel section disposed at the lower end of said upper sash slideway and having an outwardly projecting flange interlockingly and slidingly engaged with the adjacent infolded edge of said weatherstrip.

2. A combined weatherstrip and sash balance for windows including a lower and upper sash comprising a combined weaherstrip and sash slide member having a central sash parting strip and a forwardly facing channellike bottom and top sash slideways, said member having forwardly projecting flanges constituting the outer walls of the sash slideways, sash counter-balances including coil springs provided with sash engaging means at their lower ends and combined spring housing and weatherstrip members of inwardly facing channel section disposed in supported engagement with the web portions of the sash slideways, a bottom sash stop disposed at the top of said bottom sash slideway between the spring housing therein and the adjacent flange and having a downwardly projecting hook on the upper end thereof supportedly engaged with the upper end of the adjacent spring housing, and an upper sash stop disposed at the lower end of said upper sash slideway and having an outwardly projecting flange interlockingly and slidingly engaged with the adjacent infolded flange of said weatherstrip.

3. A combined Weatherstrip and sash balance for windows including a lower and upper sash comprising a combined Weatherstrip and sash slide member having a central sash parting strip and a forwardly facing channellike bottom and top sash slideways, said member having forwardly projecting flanges constituting the outer walls of the sash slideways, sash counterbalances including coil springs provided with sash engaging means at their lower ends and combined spring housing and weatherstrip members of inwardly facing channel section disposed in supported engagement with the web portions of the sash slideways, a bottom sash stop disposed at the top of said bottom sash slideway between the spring housing therein and the adjacent flange and having a downwardly projecting hook on the upper end thereof supportedly engaged with the upper end of the adjacent spring housing, an upper sash stop disposed at the lower end of said upper sash slideway and having an outwardly rojecting flange interlockingly and slidingly engaged with the adjacent infolded flange of said Weatherstrip, and a fastener member insertable through said upper sash stop for supported engagement with the web of the upper sash slideway and with a casing upon which the Weatherstrip member is mounted.

4. A combined Weatherstrip and sash balance for windows including a lower and an upper sash comprising a combined Weatherstrip and sash slide member having a central sash parting strip and a forwardly facing channel-like bottom and top sash slideways, said member hav ing forwardly projecting edge flanges constituting the outer walls of the sash slideways, the flanges of the inner sash slideway being folded inwardly; sash counterbalances including coil springs provided with sash engaging means at their lower ends and combined spring housing and Weatherstrip members of inwardly facing channel section provided with laterally projecting flanges disposed in supported engagement with the web portions of the sash slideways, and a bottom sash stop disposed at the top of said bottom sashway between the spring housing therein and the adjacent flange and having a downwardly projecting hook on the upper end thereof supportedly engaged with the upper end of the said adjacent spring housing, said stop having a tongue projecting therefrom retainingly engaging the aforesaid infolded edge of the flange.

References Cited in the file of this patent UNITED STATES PATENTS 1,911,469 Rosenwald 'tay 30, 1933 2,284,436 Lundgren May 26, 1942 2,298,406 Miller Oct. 16, 1942 2,828,514 Nardulli Apr. 1, 1958 2,940,139 Koebel June 14, 1960 

